I am having pain in my neck from straining/looking upward all the time on the bike. I mean, when you're trying to do an 80 mile ride, the neck gets a little tense and starts to hurt.

Any suggestions for neck work-outs? I don't know how to work my neck muscles without trying to access a neck machine (lots of football players use them, and they have only ever been seen by me at HUGE gyms).

I try to keep my form straight and eased, and bend my elbows at the drop bars- I use them the most- to keep myself aligned, but I am having a really hard time with the neck when I hit about 50 or 60.